I was working on my KML branch and when I merged it with cesium’s master the Cesium Viewer stopped working, to make sure it was not related to my code I tried running it from the master branch alone and the problem remains.
The screenshot was from loading “simple.czml” from the Gallery.
What browser and OS are you using? Everything appears to work fine on my Windows 7 x64 system. Can you try clearing your cache?
Glad you got it working. It’s possible this failure is a Linux specific issue. I’ll try and reproduce it on a Linux machine tomorrow and File a bug if it is. Thanks.